1-349) did not localize to this compartment or induce a decrease in stress fibers demonstrating a requirement for the C terminus. Kinase-defective PSK (K57A) was unable to reduce stress fibers. PSK is the first member of the STE20 family lacking a Cdc42/Rac binding domain that has been shown to regulate both the c-Jun N-terminal kinase mitogen-activated protein kinase pathway and the actin cytoskeleton.

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Extracorporeal shockwave lithotripsy has been shown to be a safe and effective method of treating most upper urinary tract stones. Major complications, although few, include haemorrhage, septicaemia, "Steinstrasse" formation and cardiac arrhythmias. The experience from 600 consecutive cases is reviewed and methods of prevention are discussed.